/Engine/Source/Editor/UnrealEd/Classes/Factories/MaterialImportHelpers.h
static [UMaterialInterface](API\Runtime\Engine\Materials\UMaterialInterface) * FindExistingMaterialFromSearchLocation ( const [FString](API\Runtime\Core\Containers\FString) & MaterialFullName, const [FString](API\Runtime\Core\Containers\FString) & BasePackagePath, EMaterialSearchLocation SearchLocation, [FText](API\Runtime\Core\Internationalization\FText) & OutError )